From 70d5d3dcea47c16058d2b093c29e07fdf61b56ad Mon Sep 17 00:00:00 2001
From: Akira Fujita <a-fujita@rs.jp.nec.com>
Date: Wed, 16 Sep 2009 14:28:22 -0400
Subject: [PATCH] ext4: Fix wrong comparisons in mext_check_arguments()

The mext_check_arguments() function in move_extents.c has wrong
comparisons.  orig_start which is passed from user-space is block
unit, but i_size of inode is byte unit, therefore the checks do not
work fine.  This mis-check leads to the overflow of 'len' and then
hits BUG_ON() in ext4_move_extents().  The patch fixes this issue.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Reviewed-by: Greg Freemyer <greg.freemyer@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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